1208.4890 (Yue Ban et al.)

Fast and robust spin manipulation in a quantum dot by electric fields    [PDF]

Yue Ban, Xi Chen, E. Ya Sherman, J. G. Muga

We apply an invariant-based inverse engineering method to control by time-dependent electric fields electron spin dynamics in a quantum dot with spin-orbit coupling in a weak magnetic field. The designed electric fields provide a shortcut to adiabatic processes that flips the spin rapidly, thus avoiding decoherence effects. This approach, being robust with respect to the device-dependent noise, can open new possibilities for the spin-based quantum information processing.

View original: http://arxiv.org/abs/1208.4890